Tree 3-24 m high, bole 6-15 m high. Branchlets terete, puberulous, glabrescent. Stipules filiform, 1-2 mm, densely puberulous, caducous. Leaves: rachis (2,3-)6-17 cm, puberulous, gland narrowly conical, often hollow, pointing distally, l-1.5(-5) mm high; pinnae (l-)2-4 pairs, puberulous, (1.8—)2.5—15(—16.8) cm, glands smaller but similar to rachis glands; petiolules c. 4 mm, glabrous; leaflets 2-5 pairs per pinna, opposite, chartaceous, drying dark green above, light green beneath, often unequal-sided, ovate, ovate-elliptic, elliptic-lanceolate, or obovate-elliptic, (1.8-)3.1-8.6(—11.5) by (0.6-)l.5-4.4 cm, base ± symmetrical, broadly cuneate or rounded, apex acumi — nate(-caudate), mucronulate, both surfaces glabrous or rarely scarcely puberulous along the main vein; principal lateral veins c. 5 or 6 per leaflet-half, arching; reticulation dense on both surfaces. Inflorescence terminal or axillary at the distal leaves, ± densely puberulous, consisting of pedunculate head-like spikes aggregated into racemes or panicles to 18 cm; spikes consisting of c. 10 flowers, pedicels to 2 mm, floral bracts spathulate, 3-5 mm, sericeous. Flowers pentamerous, bisexual. Calyx green, campanulate, (5.5-)6.5-9(-10) mm, puberulous, sometimes deeply bifid, teeth deltoid, c. 0.2 mm. Corolla white or yellow, funnel-shaped, (18—)21-25 mm, sericeous, usually bifid at the apex; lobes rarely separating, elliptic to lanceolate, acute, 5-7 mm. Stamens c. 45 mm, tube exserted, yellow, free part of filaments red. Ovary solitary, glabrous. Pod reddish-brown outside, bright orange within, curved into a semi-to full circle, to c. 6 cm in diameter, valves 1.5-2.5 cm wide, thinly woody, not sinuate, glabrous, veins inconspicuous, dehiscing along the dorsal suture. Seeds bluish-black, glossy, obovoid-el lip so id, 12-14 by 8-10 mm.
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Tree to 16 m tall, glabrous or nearly so except for appressed-puberulous inflorescences and flowers. Leaves bipinnate; axes with conical or stipitate gland on main axis at each pair of 1-4-jugate pinnae; pinna axes commonly with smaller stipitate glands; leaflets petiolulate, 2-5 (-6)-jugate, ovate to elliptic, acute to long-acuminate, (1.5-) 4-11.5 cm long, (1-) 2-4.5 cm wide. Inflorescences axillary or terminal racemes or panicles, to 18 cm long. Flowers sessile or with pedicels less than 2 mm long, in pedunculate clusters of 4-10 (-15); calyx to 18 mm long; corolla to 25 mm long, white or yellow. Pod oblong, curved to coiled, to 20 cm long, 25 mm wide, orange or red inside. Seeds ±ellipsoidal, to 14 mm long, black, glossy.
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